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Observations on experimental infection of worm-free sheep with L3 stage nematode parasites


, : Observations on experimental infection of worm-free sheep with L3 stage nematode parasites. Hellenike Kteniatrike Hellenic Veterinary Medicine 26(4): 491-501

Four worm-free sheep (12-14 months old) were given 3000 Trichostrongylus axei (TA), 2000 Ostertagia circumcincta (OC), 100 000 T. colubriformis (TC), or 10 000 Haemonchus contortus (HC) at the L3 stage. At slaughter 30 days later, no worms were found in the animal given TA, whilst the percentage of those that had matured in the others were: OC 33%, TC 29.2%, HC 38.5%. All sheep showed little change in body weight.

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Related references

Swales, W.E., 1940: Helminth Parasites and Parasitic Diseases of Sheep: II. Notes on the Effect of Winter Upon the Free-living Stages of Nematode Parasites of Sheep on the Pastures in Eastern Canada. Canadian Journal of Comparative Medicine and Veterinary Science 4(6): 155-161

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